/*
 *  Copyright © OpenAtom Foundation.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.openatom.ubml.model.be.definition.json.operation;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import org.openatom.ubml.model.be.definition.operation.BizOperation;
import org.openatom.ubml.model.be.definition.operation.BizOperationCollection;
import org.openatom.ubml.model.common.definition.cef.json.SerializerUtils;

import static com.fasterxml.jackson.core.JsonToken.END_ARRAY;

/**
 * The  Josn Deserializer Of BizOperation Collection
 *
 * @ClassName: BizOperationCollectionDeserializer
 * @Author: Benjamin Gong
 * @Date: 2021/1/11 17:13
 * @Version: V1.0
 */
public abstract class BizOperationCollectionDeserializer<T extends BizOperationCollection> extends JsonDeserializer<T> {
    @Override
    public T deserialize(JsonParser parser, DeserializationContext deserializationContext) {
        T collection = createCollection();
        if (SerializerUtils.readNullObject(parser)) {
            return collection;
        }
        SerializerUtils.readStartArray(parser);
        JsonToken tokentype = parser.getCurrentToken();
        if (tokentype != END_ARRAY) {
            while (parser.getCurrentToken() == tokentype) {
                BizOperation op = readBizOperation(collection, parser);
                addBizOp(collection, op);
            }
        }
        SerializerUtils.readEndArray(parser);
        return collection;
    }

    private BizOperation readBizOperation(T hashMap, JsonParser parser) {
        BizOperationDeserializer deserializer = createDeserializer();
        return deserializer.deserialize(parser, null);
    }

    protected void addBizOp(T collection, BizOperation op) {
        collection.add(op);
    }

    protected abstract T createCollection();

    protected abstract BizOperationDeserializer createDeserializer();
}
